Safety-stop for elevators.



E. CLAXTON.

SAFETY STOP FOR ELEVATORS. APPLICATION FILED MAR. 22, 1915.

1,163,217, Patented Dec. 7, 1915.

5| IHIIIIHI fl! lllllll @fl u Wm M W may FICE.

ERNEST CLAX'ION, OF BERKELEY, CALIFORNIA.

SAFETY-STOP FOR ELEVATORS.

To all whom it may concern: I Be it known that I, ERNEST GLAX'roN, a citizen of the United States, residing at Berkeley, in the county of Alameda and State of California, have invented new and useful Improvements in Safety-Stops for Elevators, of which the following is a specification. This invention relates to safety devices to be attached to or used in conjunction with elevator cars or cages for the purpose of imthe car but arranged to be operated thereby in the event of accident.

Having reference to Fig. 1 A represents an elevator car or cage; 2 the elevator well or shaft with a body of water as 3 in the bottom of the shaft' 4 is a downwardly projecting peripheral flange or skirting bell secured to the under-side of the elevator floor and intended as an air trap when submerged in the water. 5 is a conical or pyramidal deflector on the underside of the floor and inside the flange or bell 4 and adapted by reason of the churning motion of the water caused when the pyramid or cone strikes the water to co-act with the bell and the contained air cushion in checking the descent of the car.

Where it is not desired to carry the weight of the arrester on the car this arrester may be made in the form of a separate device;

shown in Fig. 2, in which case the bell 4' has a top closure or head 7, from which projects upwardly the yielding bumpers 8with which the car would first come in contact in case of accident; the bell being so supported Specification of Letters Patent.

Application filed March 8, 19 15.

Patented Dec. X, 1915 Serial No. 12,870.

immediately above the water that the weight of the descending car would immediately release the bell and cause it to come in contact with the water as though it were a unit with the car. 9 represents such a supporting means of sufliciently flimsy character as to yield by pressure above, yet capable of sustaining the safety attachment underordinary circumstances. The cone 5 also enters into this combination as before.

Preferably the conical deflector 5 has its apex within the plane of the lower edge of the bell so that on striking the water a seal is first formed completely around the cone or pyramid offering a resisting wall to the outward splash of the pyramid or cone.

The latter by reason ofcits wedge shape produces a gentle slowing-up motion which is further assisted by the the water inside the bell.

Having thus described my invention what I claim and desire to secure by Letters Patent is 1. The .combination with an elevator cage of a water reservoir in the path of the cage and a safety attachment disposed between violent churning of I the cage and the water reservoir comprising a bell adapted for submergence in the water in the reservoir and a wedge-shape deflector inside the bell. and co-acting with the wall thereof to create a churning motion of the water in the bell on the submergence of the latter.

2. In combination with anelevator cage and its well, of a water reservoir in the bottom of the well, a bell dependent from and carried by thecage and adapted for submergence 1n the water in the well, and a de fiector in the bell comprising an inverted cone and adapted to co-act with the bell to cushion the fall of the cage in the event of accident.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

ERNEST CLAXTON. Witnesses WV. W. HEALEY, M. E. EWING.

flopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents Washington, D. G. v 

